diff --git a/.github/workflows/wheel.yml b/.github/workflows/wheel.yml
index d57e0586..50157223 100644
--- a/.github/workflows/wheel.yml
+++ b/.github/workflows/wheel.yml
@@ -32,21 +32,19 @@ jobs:
           make cython
 
       - name: Build
-        uses: pypa/cibuildwheel@v2.17.0
+        uses: pypa/cibuildwheel@v2.20.0
         env:
           CIBW_TEST_REQUIRES: "pytest"
           CIBW_TEST_COMMAND: "pytest {package}/test"
           CIBW_ARCHS_LINUX: auto aarch64
           CIBW_ARCHS_MACOS: x86_64 universal2 arm64
-          CIBW_SKIP: pp*
+          CIBW_SKIP: "pp* cp38-macosx_*"
 
-      - name: Build pure Python wheel
+      - name: Build sdist
         if: runner.os == 'Linux'
-        env:
-          MSGPACK_PUREPYTHON: "1"
         run: |
           pip install build
-          python -m build -w -o wheelhouse
+          python -m build -s -o wheelhouse
 
       - name: Upload Wheels to artifact
         uses: actions/upload-artifact@v4
diff --git a/ChangeLog.rst b/ChangeLog.rst
index 9b16e41f..47328ffb 100644
--- a/ChangeLog.rst
+++ b/ChangeLog.rst
@@ -1,3 +1,11 @@
+1.1.0rc2
+========
+
+Release Date: 2024-08-19
+
+* Update Cython to 3.0.11 for better Python 3.13 support.
+* Update cibuildwheel to 2.20.0 to build Python 3.13 wheels.
+
 1.1.0rc1
 ========
 
diff --git a/msgpack/__init__.py b/msgpack/__init__.py
index c2525444..a72e974c 100644
--- a/msgpack/__init__.py
+++ b/msgpack/__init__.py
@@ -4,8 +4,8 @@
 from .exceptions import *  # noqa: F403
 from .ext import ExtType, Timestamp
 
-version = (1, 1, 0, "rc1")
-__version__ = "1.1.0rc1"
+version = (1, 1, 0, "rc2")
+__version__ = "1.1.0rc2"
 
 
 if os.environ.get("MSGPACK_PUREPYTHON"):
diff --git a/requirements.txt b/requirements.txt
index 1164a941..b677f068 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,2 +1 @@
-# Also declared in pyproject.toml, if updating here please also update there.
-Cython~=3.0.10
+Cython~=3.0.11